Place mushroom caps on poster board, label samples. Check beneath mushroom caps for "prints" of spores. Record and interpret prints left behind.

This project uses toy cars to determine how friction and gravity affect cars and braking.

In this science fair project, young children notice and track changes in trees throughout the year.

Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

Science fair project that determines which materials cause the most friction by sliding blocks of wood down a ramp.

Examine whether males or females are more likely to have a higher center of gravity.

This science fair project idea investigates how different disinfectants work in killing germs.

This science fair project idea explores how much force is needed to move a lever at different distances from the fulcrum.

There is debate about whether chalkboards or whiteboards are better. This experiment explores which leads to better retention of visually-displayed information.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

This weather spinner will improve observation skills by encouraging children to examine and track weather details and patterns.

Science fair project that demonstrates how stalagmites and stalactites are formed.

This science fair project idea determines how your body responds to allergies.

The goal of this science fair project was to examine how different angles of decline affect the tipping point of a vehicle.

Use applied math to model orbital eccentricity in this cool science fair project for 7th grade.

In this fun science fair project idea learn about the multiple sources of radio waves and fin out how difficult it is to block them.

In this kindergarten activity your child will create a map of your house and use a magnet to move pictures of your family through the house!

The apparent movement of the sun has been used to keep time since the bronze age. In this science fair project, kids plot solar time against mean solar time.

This project examines how temperature affects the volume of gas in balloons.

What happens when light hits a hard surface? Find out by conducting a simple light reflection experiment with your preschooler.

This project examines whether sugar substitutes are as sweet as real sugar.

This science fair project researches the most effective method to cut an onion and stay tear-free.

This simple activity is not only fun, it's also a useful way to organize children's closets — and offer kids some autonomy to boot.

Check out this fun science fair project idea to explore how building on different types of soil affects the relative stability of buildings in an earthquake.

Play Rock Tic-Tac-Toe, the perfect outdoor game for all ages. Help your child develop thinking skills and get away from the TV!

Try this fun garden graphing project with your kindergartener this summer to give him a leg up in math and science while spending some valuable time outdoors!

You and your child can create this beautiful butterfly mobile for hanging anywhere in the home (and learn about this magical creature while you're at it).

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

Explore the belief in astrology as a predictive system.